Header Gasket Issue
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,166
Likes: 26
From: Odenton MD
Header Gasket Issue
Are there any people who are having any issues with blowing gaskets in their NON-STOCK headers? It has happened to me twice now and I keep everything torqued down. It happened to me once when I was NA (480 rwhp) and just recently with FI (650+ rwhp). I've tried different gaskets. Am I stressing the headers too much with all of my HP? The C5 people are running way more power than me without issues. Any feedback would be much appreciated!
Racer
Joined: Feb 2003
Posts: 332
Likes: 0
From: Ft. Lewis WA
I'm at only 587 RWHP on Dynamax headers and have had no issues after 2 and a half years.
I failed to look at your info, what type of headers are you running? That might help some of these guys with a ton of experience diagnose your problem.
Brian-
I failed to look at your info, what type of headers are you running? That might help some of these guys with a ton of experience diagnose your problem.
Brian-
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 2,166
Likes: 26
From: Odenton MD
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Burning Brakes
Joined: Sep 2006
Posts: 936
Likes: 8
From: England United Kingdom
also am i right ,that stock ls1 gasket`s are better than zo6 one`s
with headers cos of the shape of the header pipe ,seal`s better cos it`s round.?oh and tq up the bolts in say 3 stages.
the gaskets i used on my zo6 with headers,gm 12558573.i think they
were round .the ls6 ones are d shape,so they dont follow the shape of the headers as well(i think).Maybe do a search before you buy.
Melting Slicks
Joined: May 2002
Posts: 3,210
Likes: 1
stock MLS gasket with copper spray on both sides, torque the bolts to the factory spec in sequence (2 passes, I believe) and you shouldn't have any problems. If you still do your flange might be warped from welding, I've seen it happen before when a heat sink isn't used. If thats the case a machine shop can true it up.